Pasteurizing apparatus



A. HOSETTLER:

PASTEURIZING APPARATUS. APPLICATIONFILED SEPT, s. 1919.

- 4 Patented Feb.1,1921.

vmmwtoi Alexander ostettler A alftoweg 5 leading from the upper end ofthe heater PATENT OFFICE.

HOSTETTLER, OI COLUMBUS, OHIO;

, PASTEUBIZ I NG APPARATUS.

. Specification oi Letters Patent. f

Patented Fat. 1, 1921.

Application filed September 6, 1919; Serial Ito. 82,007.

To all whom it may concern:

Be it known that I, ALEXANDER Hos'rnrruin, a citizen of the UnitedStates, residpasteurizlng beer, nearbeer andother beverages generatlngor containing gas, in such a way as to accomplish that resulteconomically and elfectively and without altering the palatability ofthe liquid treated.

special object of the invention is to utilize the heat of thepasteurized liquid to pre-v liminarily heat the cold untreated liquidand conversely to promote the cooling of the heated liquid with the'cold untreated liquid thereby saving fuel and the necessity of using acirculated or flowing cooling medium for the treated liquid. Anotherobject is-an improved form of pasteurizing vessel.

The invention is embodied in the example herein shown and described, thefeatures of novelty being finally claimed In the accompanying drawingthe view illustrates partially in elevation and partially in section anapparatus embodying my invention.

In-said view 1 designates a heater for the liquid of ordinary form and 2a cooler also of ordinary form. This heater can be provided with a steaminlet as at 1.

Arranged vertically between the heater and cooler is the pastenrizingvessel or cylinder3, preferably porcelain lined and of a constructionadapted to conserve the heat of the liquid to bepasteurized. A pipe 4discharges into the upper end of the cylinder 3.

and draining outlet 7.

he cylinder 3 contains a stationary screw 5 extending substantially theentire length thereof, said screw fitting within the vessel or lyin atits edges close to the wall of the cylinder and being of slow itch asshown so as to provide .a long inc ined passage for the liquid throughthe cylinder thereby prolonging or retarding its flow and preventingmuch mixing thereof.

6 designates a large inclosed tank which may contain water or othersuitable material and shown as havin a supply inlet Within said tank theoutlet or are two coiled pipes Sand having their coils alternating. Ascompared with the tank the coils are made small so as not to extenslvelymodify the temperature of the water 1n the tank. Where beer or nearbearor other liquid that should be kept cold is to be treated the coil ofthe lower pipe 8 is extended as shown at. 8 toward a cellar where a pump10 is installed to impel the beer through the coil 8 and through anextension 8 of the upper coil to the lower portion 'of' the heater 1.Connected with the lower end of the cylinder 3 is a ipe 11 leading to a'pum 12, which is connected wit an extension 9*. of the pipe 9 so thatthe hot liquid from the pasteurizing vessel 3 can be pumped through saidpipe 9. and thence discharge through an extension 9 of the uppermostcoil of said pipe 9. The pipe 9 is connected with the final cooler 2.

Thermometers 13, 14 and 15. upon the heater, pasteurizing vessel andcooler, respectively, are provided for indicating the temperature of theliquid in those parts, sothat the operation for successful pasteurizingcan be conducted accordingly. The temperature for pasteurization and thetime of application of temperature are well understood. The temperatureis obtained by regulating the heating steam and the time necessary byregulating the flow.

Suitable valves, asshown, are provided 7 9 below the coils 8 and theplacing of them in close proximity to each other greatly promotes thewarming of the liquid from the cellar and the coolin of the liquid fromthe coils 8 and 9, that is with the successive coils pasteurizer. This eects a large economy pf fuel at theheater and a saving ofpower 1npumping water for cooling pur oses." The water in the large tanks 6'neeseldom be renewed but if a particular temperature thereof for specialpurposes should needed pasteurizing vessel to prevent the escape of gasfrom those liquids containing gas, said means being indicated at theupper end of the pasteurizmg vessel where 16 deslgnates the gas inletpipe and 17 a gage for observing the ressure.

ith this apparatus it is obvious that the pasteurizing process can becarriedon continuously from the chip cask to the racking machine.

The forms of the parts can be changed without departing from the gist ofthe invention as claimed.

What I claim is:

1. In a pasteurizing apparatus, the combination of a heater for theliquid to be pasteurized, an upright pasteurizing vessel having achamber witha fixed screw of slow pitch fitting therein to form anextended passage, a conductor for the heated liquid dischar ing into theupper end of thechamber, sai chamber provided wlth an exit for thepasteurized liquid at its lower end.

2. In pasteurizing apparatus the combination of a heater, a pasteurizingvessel, a 4

, each other wherebly tank, and a pair of distinct coils of pipe in saidtank, one coil connected with the heater for the passageof cold liquidto the heater and the other coil for the'passage of hot pasteurizedliquid from the pasteurizing vessel, said pipes having their coilsalternating with each other 'andm proximity to each other whereby thecold liquid in one coil is warmed teurized liquid from the pasteurizingvessel,

said pipes having their coils in proximity to coil is warmed by t e hotliquid in the other.

4. In a pasteurizing apparatus, the combination of a heater for theliquid to be pasteurized, an upright pasteurizing vessel having acylindrical chamber with a fixed screw of slow pitch fitting therein toform 'an extended passage, a conductor for the heated liquid discharginginto the upper end of the cylindrical chamber, said chamber providedwith an exit for the pasteurized liquid at its lower end.

ALEXANDER HOSTETTLER.

the cold liquid in one

